I need to know EVERYTHING involved to make a 302 Boss engine... From bottom to top... so much out there and need to find the best combo for ME..lol.. any help would be greatly appreciated.. Thanks in advanced Guys..

I had a complete boss 302 I gave away about 3 months ago for 5k all serial numbers matched and everything. And that was with it needing to be rebuilt. With the mods in your sig I would think you would have a basis knowledge of ford motors ect... With that said I would think you would know how big of a turd the motor was, I mean the only thing its good for is a collector car that has matching numbers if you want a good combo why not use a dart block with a stroker kit, and some afr's and it will be a whole lot better than the boss is imo and a lot cheeper too.

fomogo , i do have knowledge for ford motors , but the boss 302 ive never looked into or read up on due to it not being a popular horse motor.. but its something I wanna try out possibly
The Fool , thats all i want to know , I dont care to have a original boss 302 matched numbers engine , i want to build something like a jy boss but not exactly a jy. I need to know what kinda heads can be used (dont care if there the original numbers) just need to know what parts are needed to work..I dont know guys, maybe the boss 302 isnt the way for me.. I just wanted something different for a new combo.. Thanks

You need Cleveland heads, a 302 block with the wacky boss pistons due to the massive valves on the cleveland heads. Then, you need the BOSS cam (I have no CLUE what that is) a BOSS intake (they have a weird size I think) and a whole lotta carb, I think a 650 Holley or something. Its a pretty crazy setup.

2001 BMW ///M5 - Bone stock. I still love my Windsors though!

Quote:

Jay Allen: I may not know it all, but I forgot more in last 7 hours than you'll ever know.

I think that any cam will work. P/V clearance might be an issue, but that's normal with any engine.

I see aftermarket boss intakes on ebay all the time. They are tall race style intakes, but it's a Boss, are you going to run a dual plane intake?

The pistons are the major expense. Everything else is cheap, scroungable or easily modified.

The pistons might be cheap if you can use a Nascar piston. A lot of the teams sell their unused parts. Usually they are oddball parts with undersized wrist pins and wacky compression heights. Sometimes you get lucky. If the current Yates head (Cleveland style) has the valve angles close to a production Cleveland head, and you find a set with the right compression height, you might be able to make a long rod or stroker Boss with off the shelf parts.

You just have to do the research on all of the possible combinations and see which parts you can come up with.

I'm from PTBO The crank is just a 302 crank, albeit, it was a better crank than what you'll find at the wreckers, the intake I believe is a boss-specific part, might find on E-Bay. No additional bore or stroke is needed, its a 302.

2001 BMW ///M5 - Bone stock. I still love my Windsors though!

Quote:

Jay Allen: I may not know it all, but I forgot more in last 7 hours than you'll ever know.

It's an 8.2" deck block. You just have to figure out how to fill it up. You can do a normal combination like a 302, 331, 347. The pistons will be different, otherwise it's pretty much any other 302 shortblock. I think the cooling passages in the heads need to be modified. The Boss intake will bolt up. The push rods will be different, the rocker arms must be Cleveland style. I'm not sure if they use guide plates.

It's just a mix of Cleveland and Windsor parts. It's not terribly complicated.

I know that there are several cylinder heads that will not work well because of their combustion chamber and port size, so choose wisely.

For better tech, try MPG heads. They just made a 410 in^3 Boss with CHI heads in an 8.2" deck Dart block (4.250" bore!). If they can stuff 410 inches in to an 8.2" deck block, your junk yard Boss will be a cake walk for them.

For the Clevor route you can use off the shelf TRW Boss 302 pistons and/or 289/Boss 302 length rods.
Stock block needs some holes drilled and the Boss or cleavland heads need some water modifications. Head gaskets are available from Ford.
B&A made intake manifolds called Street Boss or Track Boss for both 8.2 and 9.5 deck windsor blocks. They also sold special hyperutectic pistons for a stock 5.09 length 302 rod.

Seriously...boss mills didn't put out that much power. If all you want is the power then buy or find for free a 302 block, add forged pistons a crank and rods, a pair of good heads and a cam...you'll have more power than a boss for a lot less. Otherwise all you'll have is a mild hp clevor headed 302...NOT a boss.

There are some new cleavland style heads now from down under and with a big bore dart block with a 3.4 crank? I'm thinking some big hp could be made. Plus just the Boss 302 valve covers look cool. Tell the world it is an old school Boss 302 and kick ass with a 360 ci, Dart based clevor.

i dont want it for the all out power cause we all know theres power but not enough to bragg about.. I want to build for the motor, Boss replica ..fake, whatever.. even if it doesnt have alot of power it will when i add my tt setup to it, or if i decide to go single.

Bore it to 4.185" and add the conventional 3.4" stroker crank. You now have an 8.5" deck 377 cu in engine. Most higher end package kits are going to suffice, although you are talking about a custom piston.

Now add something like this.
Where we are talking about 340cfm or so intake charge, and a nice 80% exhaust.

i said to close it cause it seemed people were not that interested in helping me but liked to argue what sucked and what was better.. then you guys came along and started giving stuff.. SO. ADMINs please keep thread open.lol , thanks for the info ppl, keep it coming..

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